Whats the best filter to replace the OEM on an 04 5.9

 

First choice... Amsoil EaO 80 or Donaldson ELF7349. Exact same media used inside.
Second choice... Fleetguard Stratapore LF3894 or LF16035. Again exact same filter except one has flutes on the end the other doesn't.
Third choice. There isn't one.

 

Yes AMSOIL and AMSOIL Oil also. While you are at it replace all the fluids with AMSOIL products. You will not regret it. Before you do the oil change, take it out to the highway on a long stretch of pretty flat and straight area, set the cruise control at 60 and see what the rpms are. Then change the oil and filter with AMSOIL go back to the same area and repeat the test. Then post what the 2 differnet readings are

 

My preference is Fleetguard LF16035. Genosgarage.com has a good rice and will sell as filter kits.
Oil...I always seem to be able to find Valvoline Premium Blue on sale near the time the truck is due for an oil change.

Others seem to prefer synthetics and extended drains. Read-up. This has been discussed adnauseum. I don't see the benefit. I drive my truck just enough to get 7500miles/year, and require an annual oil change.

Tony

 

TonyB has a very good point. I average 23,000 - 25,000 a year, so Amsoil oil and Amsoil filter net me one oil change a year. I get the Amsoil at preferred pricing through a friend of mine and don't pay shipping either. I don't run a bypass and do an analysis at the oil change. The 04's are very oil friendly.

 

Fleetgaurd Stratopore LF16035

 

Fleetgaurd Stratopore LF16035 here also. I get mine from Geno's also.

 

Ditto

 

I based my decision from a performance standpoint;therefore, I use the Donaldson Endurance Synteq (Part# ELF 7349). This is a synthetic media filter which is 98.7 percent (absolute) efficient when faced with 15 micron contaminants,and 50 percent efficient when faced with seven micron contaminants. It is the same filter as the Amsoil EA080 filter (painted black with gold script), but cost significantly less than the Amsiol offering. They have the best filtering capabilities as far as full flow filters are concerned.

The Fleetguard Stratapore is rated at 25um absolute.

 

Anything BUT Fram... I prefer MOBIL 1 (M1-403). 100% synthetic media, very heavy duty casing, and locally available (AutoZone).

 

I am not questioning going with Amsoil however I would like you to explain to me why the rpms would be different as the auto trans has a lock up clutch and the standard trans has a dry clutch. Sometimes people become so involved with these things that they believe things that are not possible. The only way the rpms could be different would be if the clutch were slipping or the tires were spinning and I doubt that the tires would still be spinning at 60mph.
Jim O

 

Keep your sunglasses handy, it will make the sun shine all the time too.

 

Had me thinking too.

 

My preference is Baldwin BT7349, nothing but the best for my truck.

 

Poster probably cannot explain it...because having lower rpm's by changing oil brand is pretty far fetched...

But yeah, let's have a technical explanation by that member on how this happens!